Wednesday 14 September 2011

Indian Printer and Publisher has been
serialising chapters from the Best Practice Guide for Web Offset
Printers since February 2010. This is a well-illustrated how to
manual produced by the Web Offset Champion Group for both heatset and
coldset web offset printers. Meant for the pressroom, the guide has
been dealing with paper grades, roll handling, auto-paster and
splicer characteristics, splice patterns, and splicer and make ready.
The Web Offset Champion Group consists of Aylesford Newsprint, Kodak,
manroland, Megtec, Muller Martini, Nitto Denko, QuadTech, SCA, Sun
Chemical and Trelleborg.

The first chapter that we had carried
in 13 installments was Roll to Web Processing. From March 2011 we
have been printing the second chapter from this guide — Web Break
Prevention and Diagnosis. So far we have carried the sections on
Economic impact of web breaks, Web break analysis, Web break, web
wander and shift, Creases and wrinkles, Detection and control, Web
breaks in relation to production system and Web tension. The present
issue carries the section on Ambient press environment. Our
subsequent issues would carry the sections on Web breaks and
mis-splices related to paster/splicer, infeed and web guide, Ink and
dampening, Printing units, Heatset drying system and air turns, Chill
roll stand, Folder, and Roll and paper diagnosis.

This guide developed with the help of
IFRA, aims at achieving a splice efficiency of over 99%. A valuable
tool to reduce wastage in the reel room and the press room, the guide
also discusses reel storage and runnability issues. Make sure your
subscription is up to date so that you do not miss any of the
subsequent instalments of the Web Break Prevention and Diagnosis
Guide. You can order multiple copies of Indian Printer and Publisher
at special rates by writing to subscribe@ippgroup.in.